Metallic structure, such as doors and the like.



c. E. NELLIS.

METALLIC smuowrmn sUcH AS nouns AND THE LIKE.

APPLICATION FILED MAY 26, 1909. 4 Patented July 19, 1910.

2 SHEETS-SHEET 1.

WITNESSES: INVENTOR G. E. NELLIS.

METALLIC STRUCTURE SUCH AS nouns AND THE LIKE.

APPLICATION FILED MAY 26, 1909.

Patented July 19, 1910.

2 SHEETS-SHEET 2.

WITNESSES:

imirnn STATES PATENT OFFICE.

CHARLES E. NELLIS, OF BROOKLYN, NEW YORK, ASSIGNOR TO GRINDEN ART METALk COMPANY, A. CORPORATION OF NEW YORK.

METALLIC STRUCTURE, SUCH AS DOORS AND THE LIKE.

Specification of Letters Iatent.

Patented July 19, 1910.

Application filed May 26, 1909. Serial No. 498,400.

To all whom it may concern:

Be it known that I, CHARLES E. NELLIS, a citizen of the United States,and a resident of the borough of Brooklyn, county of Kings, and State ofNew York, have invented certain new and useful Improvements in MetallicStructures, Such as Doors and the Like, of which the following is afull, clear, and exact description, reference being had to theaccompanying drawings, forming part of this specification.

My invention relates to metallic structures, such as doors, frames,windows and panels.

Among the objects of my invention are the production of such astructure, which shall be attractive in appearance, strong and durable;relatively l1 ht in weight; economically manufactured quickly andaccurately assembled, and whlch shall becapable of withstanding a highdegree of heat and sudden changes in temperature.

Further objects of my invention will be hereinafter referred to, in thedetailed description of a structure embodying'the same.

For the purpose ofbriefly and clearly describing my invention, I haveselected for illustration and description, a metallic door embodying myinvention in a preferred form; but it is to be understood that theinvention is applicable to numerous structural parts besides doors andalso that the particular details described, are susceptible of variousmodifications, not involving av departure from the invention.

Figure 1 of the drawings, is an elevation of a door embodying myinvention; Fig. 2 is a vertical section on a larger scale, on the line22, (Fig. 1) Fig. 3 is a sectional view of the structural partsunassembled, shown in Fig. 2; Fig. 4 is a sectional view on the line 44,(Fig. 1) Fig. 5 is a similar view on the line 5-5, (Fig. 1) and Fig. 6is an unassembled view in section, of the parts shown in Fig. 5.

Similar reference characters are employed to designate like parts in allthe views.

The articular structure illustrated comprises rame members, to wit: thestiles 1 and 2, and the top, bottom and lock rails 3, 4 and 5, and thepanels 7 and 8. The stiles 1 and 2, and the rails 3, 4 and 5 are formedwith opposing walls 9 and 10, (Fig. 5), and are connecte by means of aninterlocking joint which forms one of the features of my invention, andis illustrated in Figs. 5 and 6. I This 'oint is formed by bendin theedges of t e walls 9 of one member, preferably a stile), back uponitself, and again bendln or recurving them in asubstantially paralleplane'so as to form a slot or groove 11, of substantially the same widthas the thickness of the metal, with a flange 12 projecting beyond thefirst bend.

reinforcing member 14, is secured to the flanges 12, either by rivetingor welding it thereto, the extension of the flanges 12, permitting thisto be accom lished with great facility, and without de acing theexterior of the structure. The edges of the other member, preferably arail, are bent in a substantially similar manner, but without the slot11, and the projecting flanges 15, of the second member are insertedinto the slots 11 of the first member. The frame members are thusprovided with shoulders 16 which abut against the shoulders on the otherframe members when the flanges 15 are inserted into the slotsll, forminga flush joint between the members. If desired, in finishing thestructure, this joint may be filled and suitably finished to present asmooth surface, entirely concealing the joint. The frame members may befurther secured in position by rivets or by brazing or welding thejoints.

It is essential, in doors and other structures of this character, thatthey should possess the capacity of withstanding a high degree of heatand extreme changes in temperature without buckling or becomingsufficiently distorted to separate or part from the frames. This isparticularly true of the panel members, which from a heat-resistingstandpoint, are the most vulnerable points of the structure. I thereforeprovide a yielding connection between the panel and frame members of thestructure, which, while securing the necessary rigidity of construction,will permit a slight but suflicient relative movement of the members,due to expansion and contraction, under high or extreme changes intemperature. This feature of my invention is illustrated in Figs. 2, 3and 4. The panel member 8, is preferably formed of two plates or sheets,which, adjacent to their edges are each formed with a double bend,similar to the bend formed in the frame members as hertofore described,providing if desired a molding-receiving slot or recess 20, and ashoulder 21. The

edges of each plate are projected beyond the shoulders 21, to form anextension :12, the extension of one plate resting against the extensionof the opposite plate. If deslred, 6 these extensions may be rigidlysecured together by riveting or wel i struction provides a dead airspace 2i, between the two plates, which will largely prevent theconduction of heat between the 10 panel plates. A member 25, preferablyof mverted channel form, fits tightly but slidingly between the walls ofthe.reinforc1ng member 26, secured to the flanges 29, of the framemembers as above described. In the 1 form shown, the member 25, isprovided with a recess 27, which receives the ends of the panelextensions 22. The latter are rigidly secured in place by riveting orotherwise. Thus the panels are supported in position rigidly againstlateral movement but yieldingly with respect to any inward or outwardmovement of the edges due to contract-ion or expansion of the metal.

The slots or recesses 11, which I have described and shown as beingformed in the stiles 1 and 2, and as receiving the projectmg flangesformed on the rails, as will be understood extend the entire length ofthe stiles, and the inner edges of the walls of the rail members 3, 4and 5 are bent to form similar slots 28, and flanges 29. The slots 11 onthe stiles, and 28 on the rails thus extend completely around the panelspaces. Moldings 30, which surround the panels, are provided on eachedge with flanges 31 and 32. The flanges 31, extend into the slots 20,on the panels, and the flanges 32 into the slots 11 and 28 on the stilesand rails respectively, the construction shown permitting the moldingsto be inserted lengthwise during the assembling of the structure, andthey are thus firmly held in position without other fastening means.

A structure of, the character described, embodying my invention,possesses reat rigidity owing to the reinforcement o the interiormargins of the frame members, produced by the bending of the edges ofthe members back upon the sheet to form the abutting shoulders and flane-receiving slots. Furthermore the different members of the structurecan be assembled by comparatively unskilled labor with great facilityand accuracy, and when completed, the structure presents smooth surfacesat all points, unmarred by any external fastening means, such as rivets,screws or bolts, for securing the moldings or the panel members to theframe. 50 In describing the manner of interlocking the stiles and rails,I have, to avoid prolixity, illustrated and described the slots asformed on the stiles, and-the cotiperating flanges as formed on therails, but it will 55 of course be understood, that a mere reversal ng.This con- I of this arrangement would be within the scope of myinvention.

I claim:

1. A metallic structure of thelcharacter described, having members whosesurfaces 7 lie in substantially the same plane, one of said membersbeing formed with a shoulder and with a slot and a flange projectingbeyond the shoulder, and the other member being formed with a shoulderwhich abuts against the shoulder of the first mentioned membef and witha flange which projects into said slot, substantially as set forth.

2. A metallic structure of the character described, containinginterlocking members, 30 one member of which has its edge bent back uponitself and recurved in a substantially parallel plane to form a slot,and a flange projecting beyond the first bend; another member providedwith a flange extending 35 into said slot and a reinforcing membersecured to the projecting flange of the first mentioned member,substantially as set forth.

3. A metallic structure of the character described, containinginterlocking members, one member of which has its edge bent back uponitself and recurved in a'substantially parallel plane to form a slot,and a flange projecting beyond the first bend; another member provldedwith a flange extending into said slot and offset to provide a flushjoint; and a reinforcin member secured to the projecting flan e o thefirst mentioned member, substantia ly as set forth.

4. A metallic structure of the character described, containinginterlocking members, one member of which has its edge bent back uponitself to form a shoulder, and recurved in a substantially parallelplane to form a slot and a flange projecting above the shoulder, anothermember having its ed e bent back upon itself to form a shoulder a uttingagainst the shoulder on said first mentioned member and recurved in asubstantially parallel plane to form a projecting flange extending intosaid slot, substantially as described.

5. In a metallic structure of the character described, havinginterlocking members, one member of which has its edge bent to form aslot to receive the other member and to form a flange projecting beyondthe slot, and an interior reinforcing member secured to the projectingflange, substantially as set forth.

6. In a metallic structure of the character described, a hollow memberhaving oppositely disposed walls, the edges of which are bent to formflange-receiving slots with flanges projecting beyond the slots, and areinforcing member connecting the flanges of the opposite walls andsecured to the inner sides thereof.

7. In a metallic structure of the charac- 'ter described, thecombination of frame 1 by flanges thereon exten members havingoppositely disposed walls, a movable member arranged between said wallsand a panel member rigidly connected to said movable member.

8. In-a metallic structure of the character described, the combinationof a frame member having oppositely disposed walls bent adjacent totheir edges to form moldingreceiving slots, a panel formed of separatedplates bent to form molding-receiving slots and having their e'd esprojected beyond the slots, a member sli ingly mounted between the wallsof the frame member and secured to the edges of the panel and moldingshaving flanges extending into the slots on the frame member and panel.

9. In a metallic structure of the character described, the combinationof a frame member having oppositely disposed walls, a channel-shapedreinforcing member secured at its sides to the edges of said walls,amovable member slidingly mounted in said channel member and a panelmember rigidly secured to said movable member.

10. In a metallic structure of the character described, the combinationof frame members having oppositely disposed walls bent adjacent to theiredges to form molding-receiving slots, panel members formed of separateplates bent to form molding-receiving slots and moldings held inposition ing into the slots on the frame and panel members.

11. A panel for a metallic structure of the character described,consisting of two separated plates, each having an edge bent inwardly toform a molding-receiving slot and extended beyond the slot to form afastening connection common to both plates.

12. A panel for a metallic structure of the character describedconsisting of two separated plates having their edges bent inwardly andbackwardly and then extended forwardly beyond the bend to form afastening connection common to both plates.

13. In a metallic structure of the character described the combinationof frame members, a panel member consistin of two se arated plateshaving their edges bent 1nwardly into contact with each other andextended beyond the bend to form a fastening projection common to bothplates, and a yielding connection between such projection and the framemembers.

14:. In a metallic structure of the character described, the combinationof frame members, a panel member consisting of two separated plateshaving their edges bentnwardly and ba'ckwardly into contact with eachother and extended forwardly beyond the bend to form a fasteningprojection common to both plates and a yielding connection between saidprojection and the frame members.

CHARLES E. NELLIS. Witnesses:

ETHEL STORY, FRANK V. GRINDEN.

